--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/xhtml2fo.py Thu Aug 20 14:48:35 2009 +0200
@@ -0,0 +1,142 @@
+from cubicweb.utils import can_do_pdf_conversion
+assert can_do_pdf_conversion()
+
+from xml.etree.ElementTree import QName, fromstring
+from pyxmltrf.standard.xhtml_xslfo.transformer import XHTML2FOTransformer
+from pyxmltrf.utils.xslfo.standard import cm
+from pyxmltrf.utils.xslfo import SimplePageMaster
+from pyxmltrf.standard.xhtml_xslfo.default_styling import default_styles
+from pyxmltrf.standard.xhtml_xslfo import XHTML_NS
+
+
+class ReportTransformer(XHTML2FOTransformer):
+ """
+ Class transforming an XHTML input tree into a FO document
+ displaying reports (one report for each <div class="contentmain">
+ element in the input tree.
+ """
+
+ def __init__(self, section,
+ page_width=21.0, page_height=29.7,
+ margin_top=1.0, margin_bottom=1.0,
+ margin_left=1.0, margin_right=1.0,
+ header_footer_height=0.75,
+ standard_font_size=11.0, default_lang=u"fr" ):
+ """
+ Initializes a transformer turning an XHTML input tree
+ containing <div class="contentmain"> elements representing
+ main content sections into a FO output tree displaying the
+ reports.
+
+ page_width: float - width of the page (in cm)
+ page_height: float - height of the page (in cm)
+ margin_top: float - top margin of the page (in cm)
+ margin_bottom: float - bottom margin of the page (in cm)
+ margin_left: float - left margin of the page (in cm)
+ margin_right: float - right margin of the page (in cm)
+ header_footer_height: float - height of the header or the footer of the
+ page that the page number (if any) will be
+ inserted in.
+ standard_font_size: float - standard size of the font (in pt)
+ default_lang: u"" - default language (used for hyphenation)
+ """
+ self.section = section
+ self.page_width = page_width
+ self.page_height = page_height
+
+ self.page_tmargin = margin_top
+ self.page_bmargin = margin_bottom
+ self.page_lmargin = margin_left
+ self.page_rmargin = margin_right
+
+ self.hf_height = header_footer_height
+
+ self.font_size = standard_font_size
+ self.lang = default_lang
+
+ XHTML2FOTransformer.__init__(self)
+
+
+ def define_pagemasters(self):
+ """
+ Defines the page masters for the FO output document.
+ """
+ pm = SimplePageMaster(u"page-report")
+ pm.set_page_dims( self.page_width*cm, self.page_height*cm )
+ pm.set_page_margins({u'top' : self.page_tmargin*cm,
+ u'bottom': self.page_bmargin*cm,
+ u'left' : self.page_lmargin*cm,
+ u'right' : self.page_rmargin*cm })
+ pm.add_peripheral_region(u"end",self.hf_height)
+ dims = {}
+ dims[u"bottom"] = self.hf_height + 0.25
+ pm.set_main_region_margins(dims)
+ return [pm]
+
+ def _visit_report(self, in_elt, _out_elt, params):
+ """
+ Specific visit function for the input <div> elements whose class is
+ "report". The _root_visit method of this class selects these input
+ elements and asks the process of these elements with this specific
+ visit function.
+ """
+
+ ps = self.create_pagesequence(u"page-report")
+ props = { u"force-page-count": u"no-force",
+ u"initial-page-number": u"1",
+ u"format": u"1", }
+ self._output_properties(ps,props)
+
+ sc = self.create_staticcontent(ps, u"end")
+ sc_bl = self.create_block(sc)
+ attrs = { u"hyphenate": u"false", }
+ attrs[u"font-size"] = u"%.1fpt" %(self.font_size*0.7)
+ attrs[u"language"] = self.lang
+ attrs[u"text-align"] = u"center"
+ self._output_properties(sc_bl,attrs)
+ sc_bl.text = u"Page" + u" " # ### Should be localised!
+ pn = self.create_pagenumber(sc_bl)
+ pn.tail = u"/"
+ lpn = self.create_pagenumbercitation( sc_bl,
+ u"last-block-of-report-%d" % params[u"context_pos"]
+ )
+
+
+ fl = self.create_flow(ps,u"body")
+ bl = self.create_block(fl)
+
+ # Sets on the highest block element the properties of the XHTML body
+ # element. These properties (at the least the inheritable ones) will
+ # be inherited by all the future FO elements.
+ bodies = list(self.in_tree.getiterator(QName(XHTML_NS,u"body")))
+ if len(bodies) > 0:
+ attrs = self._extract_properties([bodies[0]])
+ else:
+ attrs = default_styles[u"body"].copy()
+ attrs[u"font-size"] = u"%.1fpt" %self.font_size
+ attrs[u"language"] = self.lang
+ self._output_properties(bl,attrs)
+
+ # Processes the report content
+ self._copy_text(in_elt,bl)
+ self._process_nodes(in_elt.getchildren(),bl)
+
+ # Inserts an empty block at the end of the report in order to be able
+ # to compute the last page number of this report.
+ last_bl = self.create_block(bl)
+ props = { u"keep-with-previous": u"always", }
+ props[u"id"] = u"last-block-of-report-%d" % params[u"context_pos"]
+ self._output_properties(last_bl,props)
+
+
+ def _root_visit(self):
+ """
+ Visit function called when starting the process of the input tree.
+ """
+ content = [ d for d in self.in_tree.getiterator(QName(XHTML_NS,u"div"))
+ if d.get(u"id") == self.section ]
+ # Asks the process of the report elements with a specific visit
+ # function
+ self._process_nodes(content, self.fo_root,
+ with_function=self._visit_report)
+